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WM8953ECS

Low Power Stereo ADC with PLL and TDM Interface

Wolfson Microelectronics plc 

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WM8953

Low Power Stereo ADC with PLL and TDM Interface

DESCRIPTION

FEATURES

The WM8953 is a low power high performance stereo ADC

designed for mobile handsets and other portable devices.

Four single-ended or differential input connections are provided,

with up to 60dB of analogue gain in each input path. Stereo 24-

bit sigma-delta ADCs provide hi-fi quality audio recording of

microphones or line input. A programmable high pass filter is

available in the ADC path for removing DC offsets and

suppressing wind and other low frequency noise.

A low noise microphone bias with programmable current detect

and short-circuit detect is provided.

A flexible digital audio interface supports most commonly-used

clocking schemes. The audio interface supports TDM and

tristate outputs allow multiple devices to share the same

interface.

An integrated low power PLL provides support for most

commonly-used audio sample rates.

• SNR 94dB (‘A’ weighted)

• THD -82dB at 48kHz, 3.3V

• Full stereo microphone / line input interface

• Low noise MICBIAS

• Low power consumption

• Full analogue and digital volume control

• PLL provides flexible clocking scheme

• 2-wire, 3-wire or 4-wire control

• Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz

• GPIO functions available

• Digital supply: 1.71V – 3.6V

• Analogue supply: 2.7V – 3.6V

• W-CSP package (3.226 x 3.44 x 0.7mm, 0.5mm pitch)

APPLICATIONS

• Multimedia phones

• General purpose low power audio ADC

The WM8953 is supplied in very small and thin 42-ball WCSP

package, ideal for portable systems.

WOLFSON MICROELECTRONICS plc

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Production Data, January 2009, Rev 4.0

Copyright ©2009 Wolfson Microelectronics plc

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